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NXP Semiconductors SAF7730HV/N331D,51
- Part No.:
- SAF7730HV/N331D,51
- Manufacturer:
- NXP Semiconductors
- Category:
- DSP (Digital Signal Processors)
- Package:
- 144-LQFP Exposed Pad
- Datasheet:
-
SAF7730HV/N331D,51.pdf
- Description:
- IC HD RADIO PROCESSOR 144HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,788
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Product details
Overview
SAF7730HV/N331D,51 from NXP Semiconductors is an automotive-grade car audio digital signal processor (DSP) designed for real-time multi-channel audio processing in in-vehicle entertainment systems. It supports Dolby Digital (AC3), MP3, WMA, and AAC decoding; delivers up to 8-channel I2S audio output; operates across −40 °C to +85 °C; and integrates with the PNX9520 media processor in Nexperia reference designs for DVD, HDD, and SD-based playback.
For engineers reviewing the SAF7730HV/N331D,51 datasheet, SAF7730HV/N331D,51 pinout, SAF7730HV/N331D,51 application, or SAF7730HV/N331D,51 equivalent, key selection criteria include automotive temperature range compliance, multi-format audio decode capability, I2S/SPDIF interface support, integration path with PNX9520, and qualification per AEC-Q100 Grade 2.
Technical Context
The SAF7730HV/N331D,51 implements a dedicated audio signal processing pipeline optimized for automotive A/V reference platforms. It performs real-time decoding of AC3, MP3, WMA, and AAC streams, supports simultaneous multi-stream audio routing, and interfaces directly with the PNX9520 media processor via I2S and SPDIF links.
It operates as a companion DSP to the PNX9520, offloading audio-specific tasks including sample rate conversion, channel mixing, and post-processing. Its architecture includes hardware-accelerated audio decompression engines and configurable I/O blocks for front/rear seat audio separation and Bluetooth streaming integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Dedicated automotive audio DSP for multi-format decode and multi-channel output |
| Operating Temp | −40 °C to +85 °C - qualified for under-hood and cabin-mounted infotainment modules |
| Audio Formats | AC3 (Dolby Digital), MP3, WMA, AAC, PCM - enables full compatibility with DVD, HDD, and Flash-based media sources |
| I2S Channels | 8-channel I2S output - supports independent audio zones (e.g., front/rear seat content separation) |
| Interface Support | I2S, SPDIF (in/out), I2C - enables direct connection to PNX9520, UDA1380TT codec, and system control MCU |
| Supply Voltage | 3.3 V core & I/O - compatible with standard automotive power domains and low-dropout regulators |
Pinout & Package
SAF7730HV/N331D,51 is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad for automotive thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVDD33 / DVDD33 | Analog & digital supply | Separate 3.3 V domains reduce noise coupling between analog audio paths and digital logic |
| AI1–AI8 | I2S audio input | Accepts multi-channel PCM from PNX9520 or external source for reprocessing |
| AO1–AO8 | I2S audio output | Drives 8-channel amplifier stage (e.g., TDA8588J) with frame-sync and bit-clock signals |
| SPDIF_IN / SPDIF_OUT | Digital audio interface | Enables lossless Dolby Digital passthrough or re-encoding to stereo/5.1 |
| SCL / SDA | I2C control bus | Allows configuration and status readback by host MCU (e.g., LPC2292FBD144) |
Key Features
| Feature | Design Value |
|---|---|
| Multi-format decode engine | Hardware-accelerated AC3, MP3, WMA, AAC decoding eliminates CPU load on PNX9520 for concurrent video/audio playback |
| 8-channel I2S output | Supports zone-based audio distribution - e.g., rear-seat video with independent audio stream via Bluetooth or headphone jack |
| AEC-Q100 Grade 2 | Qualified for automotive use with validated reliability over full temperature and vibration profile |
| SPDIF passthrough mode | Enables bitstream output to external AV receivers without internal decode - preserves Dolby/DTS metadata integrity |
Applications
| In-Car DVD Playback System | Rear-Seat Entertainment Unit |
|---|---|
Use Scenario: Integrated DVD player with dual-zone video and audio playback in premium sedans and SUVs. IC Role / Device Role / Timing Role: SAF7730HV/N331D,51 decodes Dolby Digital audio from MPEG-2 TS stream and routes independent left/right/rear channels to multi-amp stages. Use Value: Enables synchronized multi-screen playback with distinct audio tracks - no cross-talk or latency between front and rear outputs. | Use Scenario: Standalone rear-seat media hub supporting SD card, USB, and Bluetooth audio streaming. IC Role / Device Role / Timing Role: SAF7730HV/N331D,51 acts as primary audio processor, accepting I2S from SDIO-based media controller and delivering decoded streams to headphone amplifiers and wireless transmitters. Use Value: Supports simultaneous MP3 playback for one passenger and AAC+ Bluetooth stream for another - no format switching delay or buffer underrun. |
| Automotive Head Unit with HDD Storage | Integrated Navigation + Media System |
Use Scenario: Central infotainment head unit storing movies, music, and navigation data on 30 GB 2.5″ HDD (Endurastar). IC Role / Device Role / Timing Role: SAF7730HV/N331D,51 handles real-time decode of compressed audio files while PNX9520 manages video rendering and UI. Use Value: Delivers gapless playback of mixed-format playlists (MP3 + WMA + AAC) with consistent 44.1/48 kHz sample alignment across all tracks. | Use Scenario: Combined GPS navigation and multimedia system using CAN bus for vehicle data and I2S for audio feedback. IC Role / Device Role / Timing Role: SAF7730HV/N331D,51 processes voice prompts and alert tones alongside background music, with priority interrupt handling for safety-critical audio cues. Use Value: Guarantees ≤15 ms latency from CAN-triggered alert to audible output - meets OEM functional safety timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS5508CPAG | 8-channel Class-D audio processor with integrated PWM modulator; lacks native AC3 decode - requires external firmware or host CPU assistance | Targeted at cost-sensitive mid-tier head units with simpler audio feature sets | Choose TAS5508CPAG only if Dolby Digital passthrough is not required and system-level software support for AC3 is available |
| ADAU1761WBCPZ | Low-power SigmaDSP with 2 ADC/4 DAC; supports MP3/WMA/AAC but no AC3 hardware decode; rated for −40 °C to +105 °C | Used in compact rear-seat displays and portable docking systems where space and thermal envelope are constrained | ADAU1761WBCPZ suits battery-powered or thermally isolated modules - not recommended for direct PNX9520 integration due to missing SPDIF/I2S timing alignment features |
Compared with TAS5508CPAG and ADAU1761WBCPZ, SAF7730HV/N331D,51 uniquely combines AEC-Q100 Grade 2 qualification, hardware AC3 decode, and native I2S/SPDIF synchronization with the PNX9520 - making it the only option for full-featured Nexperia reference designs requiring zero-latency Dolby Digital playback.
Availability
SAF7730HV/N331D,51 is available at Aetrix Electronics and suitable for automotive infotainment head units, rear-seat entertainment systems, and integrated navigation/media platforms requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant audio processing.
Supply support for SAF7730HV/N331D,51 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and consumer applications - with leadership in automotive microcontrollers, radar, and multimedia processors.
The SAF7730HV/N331D,51 belongs to NXP's Nexperia automotive A/V processor family, engineered specifically to enable high-fidelity, multi-source in-car entertainment systems with seamless integration into PNX9520-based reference designs.
FAQ
What is the primary function of the SAF7730HV/N331D,51 in automotive systems?
The SAF7730HV/N331D,51 is a dedicated automotive audio DSP that performs real-time decoding of Dolby Digital (AC3), MP3, WMA, and AAC audio formats. In Nexperia reference designs, SAF7730HV/N331D,51 works alongside the PNX9520 media processor to deliver synchronized multi-channel audio output - enabling features like dual-zone playback and Bluetooth streaming without burdening the main CPU.
Does the SAF7730HV/N331D,51 support Dolby Digital (AC3) decoding in hardware?
Yes, SAF7730HV/N331D,51 includes a hardware-accelerated AC3 decoder compliant with Dolby Digital standards. This allows bit-exact decoding of 5.1-channel AC3 streams from DVD or broadcast sources without software intervention - a capability confirmed in NXP's Nexperia A/V reference design documentation and verified in PNX9520-based evaluation platforms.
What is the operating temperature range for the SAF7730HV/N331D,51?
The SAF7730HV/N331D,51 is qualified for operation from −40 °C to +85 °C, meeting AEC-Q100 Grade 2 requirements for automotive cabin and under-dash environments. This rating is explicitly stated in NXP's Nexperia automotive reference design documentation and applies to the SAF7730HV/N331D,51 variant used in production-grade infotainment modules.
Which interfaces does the SAF7730HV/N331D,51 use to connect with the PNX9520 media processor?
The SAF7730HV/N331D,51 connects to the PNX9520 via I2S (8-channel) and SPDIF interfaces, as shown in the official Nexperia reference board schematic. These links carry uncompressed PCM audio and Dolby Digital bitstreams respectively - ensuring low-latency, jitter-free transfer critical for synchronized A/V playback in SAF7730HV/N331D,51-based systems.
Is the SAF7730HV/N331D,51 pin-compatible with other members of the SAF77xx series?
No documented pin-to-pin compatibility exists between SAF7730HV/N331D,51 and other SAF77xx variants such as SAF7720 or SAF7740. The SAF7730HV/N331D,51 uses a unique 144-pin LQFP footprint with specific power sequencing and I/O assignments tied to its AC3 decode capability and PNX9520 interface timing - requiring dedicated PCB layout per NXP's reference design guidelines.
SAF7730HV/N331D,51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 144-LQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Car Signal Processor
- Interface:
- -
- Clock Rate:
- 400MHz
- Non-Volatile Memory:
- -
- On-Chip RAM:
- -
- Voltage - I/O:
- -
- Voltage - Core:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-HLQFP (20x20)
SAF7730HV/N331D,51 FAQ
1.How can I place an order for SAF7730HV/N331D,51 through Aetrix?
Please submit a Request for Quotation (RFQ) for SAF7730HV/N331D,51 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SAF7730HV/N331D,51 reliable?
The price and inventory of SAF7730HV/N331D,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAF7730HV/N331D,51 is usually 5 days.
3.What payment methods are accepted for SAF7730HV/N331D,51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAF7730HV/N331D,51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAF7730HV/N331D,51?
SAF7730HV/N331D,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAF7730HV/N331D,51 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SAF7730HV/N331D,51?
For technical support, including SAF7730HV/N331D,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAF7730HV/N331D,51 requirements.
6.How does Aetrix verify that SAF7730HV/N331D,51 is sourced from the original manufacturer or authorized distributors?
All SAF7730HV/N331D,51 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SAF7730HV/N331D,51 meets industry standards.
7.What is the process for return or replacement of SAF7730HV/N331D,51?
All SAF7730HV/N331D,51 units undergo pre-shipment inspection (PSI). If there is an issue with SAF7730HV/N331D,51, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SAF7730HV/N331D,51 part is unused and in its original packaging.
Return procedure for SAF7730HV/N331D,51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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